Quick Sigma

Multi-group tally & tracker

Only for iPhone

Free · In‑App Purchases

iPhone

Calculating each item separately, every time you tally? If only you had a calculator for each one. Try swapping your calculator for Quick Sigma. Enter numbers, calculator-style. Punching the same items into a calculator, day after day — shop sales, household expenses, daily records. Quick Sigma was built to support exactly that kind of work. Tap keys like a calculator, and subtotals and totals come together automatically. Each entry is saved as you go — one slip never means starting over from scratch. ■ Made for ・Shop owners adding up daily sales by category on a calculator ・Anyone tracking household spending by category ・Anyone logging the same numbers daily — weight, inventory, and more ■ Simple by design Name your three levels — Tab → Group → Item — then just tap keys like a calculator. ・Pick where it goes, then just type. ・Subtotals and totals, automatic. ・Open it up, check at a glance. ・Big numbers, same easy input. ■ Say you're splitting the bill You covered dinner for friends — and now you're going through the receipt again, once for each person? With Quick Sigma, you enter the receipt just once, from the top. As you type, everyone's total comes together on its own. No more second passes through the receipt. ■ Your data stays on your device Quick Sigma collects no personal information and no usage data. Nothing you enter is ever sent anywhere. No ads, no tracking. ■ Free features ・Enter data with 1 tab, 5 groups, and 5 items per group ・Viewing, totals, and backup are always free and unlimited ■ With the subscription (Full Plan) ・Unlimited tabs, groups, and items ・Reordering (swap your mains) ・Custom digit settings and zero-value entries ・CSV export (in a format you can open in spreadsheet apps and more) □ About the subscription ・Monthly and yearly plans are available (prices are shown on the in-app purchase screen) ・Payment is charged to your Apple Account. The subscription renews automatically unless cancelled at least 24 hours before the end of the current period ・You can cancel anytime in Settings > [your name] > Subscriptions on your iPhone ・Cancelling never deletes your data. Viewing, totals, and backup remain available Privacy Policy: https://orucad4.github.io/sigmas-support/privacy.html Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Contact: quicksigma.support@gmail.com

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■ Now available in English The entire app is now available in English. It switches automatically to match your device language. ■ Entry counts on the Totals screen See how many entries you've made for each group and item. ■ An expanded Help section Added a new "Viewing totals" topic, along with a link to the support site. ■ Improved CSV export File names now include the tab name and a timestamp, so repeated exports no longer overwrite each other. ■ Display refinements Numbers stay readable even at larger text sizes.

Version 1.1

The developer, Hiroshi Sakakibara, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Not Collected

    The developer does not collect any data from this app.

    Privacy practices may vary, for example, based on the features you use or your age. Learn More

    Accessibility

    The developer has not yet indicated which accessibility features this app supports. Learn More

    Information

    Seller
    • Hiroshi Sakakibara
    Size
    • 2.6 MB
    Category
    • Productivity
    Compatibility
    Requires iOS 18.6 or later.
    • iPhone
      Requires iOS 18.6 or later.
    Languages
    • English and Japanese
    Age Rating
    4+
    In-App Purchases
    Yes
    • Quick Sigma Full (Yearly) $49.99
    • Quick Sigma Full (Monthly) $5.99
    • Learn More
    Copyright
    • © 2026 Hiroshi Sakakibara
  • Privacy Policy